Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.
Average class size
24.00
2025/26
Mainstream classes
14
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
2
2025/26
Class group metrics trend
Class group metrics by year
Year
Mainstream class pupils
Mainstream classes
Average class size
Largest class
Classes 30+
2006/07
305
12
25.42
31
2
2007/08
304
12
25.33
32
2
2008/09
300
12
25.00
32
2
2009/10
291
11
26.45
32
2
2010/11
290
11
26.36
33
2
2011/12
309
11
28.09
33
4
2012/13
288
10
28.80
33
3
2013/14
297
10
29.70
32
6
2014/15
298
11
27.09
32
3
2015/16
317
11
28.82
32
5
2016/17
324
12
27.00
32
2
2017/18
344
13
26.46
32
2
2019/20
357
13
27.46
36
4
2020/21
349
14
24.93
33
2
2021/22
348
14
24.86
33
2
2022/23
349
14
24.93
33
2
2023/24
340
14
24.29
33
2
2024/25
342
14
24.43
31
2
2025/26
336
14
24.00
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2017/18: 324 in 2016/17 → 344, +20 pupils.
Biggest loss in a single year: 1993/94: 754 in 1982/83 → 642, -112 pupils.
Largest single-class increase: 2nd Class in 2022/23 (66 → 76, +10).
Largest single-class decrease: 4th Class in 2025/26 (77 → 59, -18).
Largest cohort-step gain: 5th → 6th in 2024/25 (70 → 73, +3).
Largest cohort-step loss: 4th → 5th in 2023/24 (72 → 70, -2).
Overall: 965 (1974/75) → 336 (2025/26), -629.
Summary statistics (class-level data)
Min / max / mean enrolment per class across the available final by-standard years.
Class
Min
Max
Mean
Years
Junior Infants
23
23
23.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
46
76
63.8
6
3rd Class
60
75
67.0
6
4th Class
59
77
69.0
6
5th Class
65
78
71.0
6
6th Class
64
75
69.3
6
Total
288
965
469.8
42
Total enrolment over time
Total and gender trends use historical records where available. Class-level data starts in 2020/21.
Enrolment by gender over time
Enrolment by class over time
Cohort progression
Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).